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Working Principle
Drill & Insert: Drill a hole of the specified diameter into the concrete substrate, clean it thoroughly, and insert the complete anchor assembly to the bottom of the hole.
Tighten to Drive: Use a wrench to tighten the hex-headed bolt → This action pulls the tapered cone inwards, deeper into the sleeve.
Radial Expansion: As the cone is drawn into the sleeve → The sleeve experiences longitudinal compression and radial expansion → The slotted portion of the sleeve is forcibly pressed against the concrete hole wall.
Dual Anchorage: High-strength friction + a mechanical interlock develops between the expanded sleeve and the hole wall → Achieving bidirectional load-bearing capacity (resisting both tension and shear).
Essence: A force transmission chain: Bolt rotation force → Cone displacement → Sleeve expansion → Mechanical interlock/lock.
Summary: Tightening the bolt with a wrench drives the cone backwards, forcing the slotted expansion sleeve to expand and mechanically lock into the substrate, achieving high-strength mechanical anchorage.
Advantage
1. Precise Preload Control
Achieves accurate torque application via wrench-tightening, preventing overload or insufficient preload while ensuring long-term stability (unlike hammer drive anchors with no preload capability).
2. Superior Vibration & Fatigue Resistance
Dual mechanism (mechanical expansion + preload) effectively resists equipment vibrations, wind loads, and seismic forces (maintains integrity at >5Hz vibration frequencies).
3. High Bidirectional Load Capacity
Pullout Resistance: Sleeve expansion creates mechanical interlock (up to 50kN);
Shear Resistance: Bolt directly bears transverse loads (1.5~2x pullout capacity).
4. Reliable & Simple Installation
Pre-assembled unit design (prevents part loss) requiring only standard wrenches—no specialized tools (e.g., reamers for undercut anchors).
5. Flush-Mounted Profile
Exposes only the hex bolt head post-installation, eliminating additional nuts. Ideal for space-sensitive applications (e.g., curtain wall brackets, heavy-duty rack bases).
6. Full Environmental Adaptability
Material options: Galvanized steel (standard), A4 stainless steel (316-grade salt-spray resistance), Hot-dip galvanized (heavy corrosion protection), with optional nylon caps for thread protection.
Competitive Differentiation
vs Chemical Anchors: Superior vibration resistance (adhesives degrade/crack); Removable (non-destructive extraction);
vs Hammer Drive Anchors: Controllable preload; ≥40% higher shear capacity;
vs Undercut Anchors: No specialized reaming tools required, reducing costs by 30%.
Critical Usage Prerequisites
Substrate Requirements: Only for solid concrete ≥ C25 or dense natural stone;
Installation Standards:
Hole diameter tolerance ≤0.5mm (e.g., Ø14±0.5mm for M12 anchors);
Hole depth >4× anchor diameter (e.g., ≥40mm for M10);
Dust-free holes (residual dust reduces capacity by 30%+).
Engineering Value Proposition
Ideal Applications:
Heavy vibration-resistant anchoring (Generator/compressor bases)
Life-safety systems (Seismic bracing for fire pipes)
High-preload scenarios (Curtain wall brackets/steel column bases)
Absolute Prohibitions:
High-impact loads (>10g acceleration, e.g., stamping presses)
High-temperature environments (>300°C causing preload failure)
Summary: With vibration resistance, high preload, and bidirectional load capacity as core strengths, hex drive sleeve anchors are irreplaceable in heavy-load industrial, energy, and infrastructure applications—strictly contingent on substrate strength and installation precision!
Application
1. Heavy Industry & Energy Facilities
Vibration-Resistant Anchoring for Heavy Equipment: Specifically designed for compressor, generator, and hydraulic unit bases subject to strong vibrations, offering significantly superior anti-loosening performance compared to hammer drive anchors. Typical case: Reactor vessel support frame anchoring in chemical plants (using M20 A4 stainless steel for corrosion and fatigue resistance).
Energy Infrastructure: Suitable for wind turbine tower base bolt retrofitting and transformer base anchoring, requiring seismic load verification. Example: Remediation of misaligned embeds in substation GIS equipment installations, with ≥50kN pullout force per anchor.
2. Building Structures & Public Safety Engineering
Critical Structural Connections: Serves as a permanent anchoring solution for steel column base plates to concrete foundations (replacing cast-in bolts or for reinforcement). Example: Mega steel column base plates in commercial complexes (M24 anchor groups with ≥120kN shear resistance).
Life Safety Systems: Heavy-duty fire pipe supports and seismic bracing systems compliant with GB 50981 seismic code. Representative case: Fire pipeline brackets in metro tunnels (bidirectional seismic verification + A4 stainless steel for moisture/corrosion resistance).
Public Protection Facilities: Applications requiring impact load resistance and anti-loosening design, such as bridge anti-collision barrier bases and airport runway light fixtures.
3. Special Construction & High-End Curtain Walls
Long-Span Curtain Wall Anchorage: Post-installed brackets for unitized curtain walls, relying on high preload control to ensure wind load resistance. Case study: 200m skyscraper glass curtain wall using M16 anchors (≥25kN pullout force per anchor).
Heavy Decorative Elements: Subframe bases for large stone cladding and sculpture foundations, featuring exposed hex heads for concealed installation.
4. Transportation & Municipal Infrastructure
Rail Transit: Platform canopy column anchoring for high-speed rail, requiring fatigue vibration and cyclic load validation.
Tunnel Engineering: Sealing of shield tunnel segment lifting holes, with sealing washers ensuring watertightness under high hydrostatic pressure.
Port Machinery: Rail clamp fixing for container cranes, mandating A4 stainless steel in salt-spray corrosive environments.
5. Innovative Special Applications
Existing Structure Reinforcement: Anchor connections for steel-jacketed concrete beam/column retrofits, featuring removable designs for maintenance access.
Vibration Isolation for Precision Instruments: Optical table isolation base anchoring in labs, utilizing precise preload control to prevent stress deformation.
Nuclear Power Facilities: Non-safety-class equipment bracket fixing (special models certified via nuclear plant LOCA testing).
Prohibited Applications:
Dynamic Impact Loads: Extreme impact equipment (e.g., forging hammers, stamping presses) requiring dedicated shock-absorbing anchors.
High-Temperature Environments: Locations exceeding 300°C (thermal expansion mismatch causes preload failure).
Chemical Corrosion Zones: Strong acid/alkali immersion environments (stainless steel still requires additional anti-corrosion coatings).
Key Selection Criteria:
Load Matching: For pullout demands >30kN, undercut anchors are preferred (hex sleeve anchors max. ~50kN).
Substrate Verification: Aged concrete requires strength testing (rebound hammer); embedment depth must exceed crack depth by +20mm.
Corrosion Protection: Coastal projects demand 316L stainless steel + nylon caps (prevents thread galling).
Industry Trend: Next-generation products integrate torque-indicating washers (color-changing rings) for visual preload monitoring.
Summary: Hex drive sleeve anchors are irreplaceable for heavy-load, vibration-resistant, high-preload scenarios (e.g., energy equipment, life-safety systems), provided strict adherence to load type, substrate integrity, and corrosion environment boundaries.
Working Principle
Drill & Insert: Drill a hole of the specified diameter into the concrete substrate, clean it thoroughly, and insert the complete anchor assembly to the bottom of the hole.
Tighten to Drive: Use a wrench to tighten the hex-headed bolt → This action pulls the tapered cone inwards, deeper into the sleeve.
Radial Expansion: As the cone is drawn into the sleeve → The sleeve experiences longitudinal compression and radial expansion → The slotted portion of the sleeve is forcibly pressed against the concrete hole wall.
Dual Anchorage: High-strength friction + a mechanical interlock develops between the expanded sleeve and the hole wall → Achieving bidirectional load-bearing capacity (resisting both tension and shear).
Essence: A force transmission chain: Bolt rotation force → Cone displacement → Sleeve expansion → Mechanical interlock/lock.
Summary: Tightening the bolt with a wrench drives the cone backwards, forcing the slotted expansion sleeve to expand and mechanically lock into the substrate, achieving high-strength mechanical anchorage.
Advantage
1. Precise Preload Control
Achieves accurate torque application via wrench-tightening, preventing overload or insufficient preload while ensuring long-term stability (unlike hammer drive anchors with no preload capability).
2. Superior Vibration & Fatigue Resistance
Dual mechanism (mechanical expansion + preload) effectively resists equipment vibrations, wind loads, and seismic forces (maintains integrity at >5Hz vibration frequencies).
3. High Bidirectional Load Capacity
Pullout Resistance: Sleeve expansion creates mechanical interlock (up to 50kN);
Shear Resistance: Bolt directly bears transverse loads (1.5~2x pullout capacity).
4. Reliable & Simple Installation
Pre-assembled unit design (prevents part loss) requiring only standard wrenches—no specialized tools (e.g., reamers for undercut anchors).
5. Flush-Mounted Profile
Exposes only the hex bolt head post-installation, eliminating additional nuts. Ideal for space-sensitive applications (e.g., curtain wall brackets, heavy-duty rack bases).
6. Full Environmental Adaptability
Material options: Galvanized steel (standard), A4 stainless steel (316-grade salt-spray resistance), Hot-dip galvanized (heavy corrosion protection), with optional nylon caps for thread protection.
Competitive Differentiation
vs Chemical Anchors: Superior vibration resistance (adhesives degrade/crack); Removable (non-destructive extraction);
vs Hammer Drive Anchors: Controllable preload; ≥40% higher shear capacity;
vs Undercut Anchors: No specialized reaming tools required, reducing costs by 30%.
Critical Usage Prerequisites
Substrate Requirements: Only for solid concrete ≥ C25 or dense natural stone;
Installation Standards:
Hole diameter tolerance ≤0.5mm (e.g., Ø14±0.5mm for M12 anchors);
Hole depth >4× anchor diameter (e.g., ≥40mm for M10);
Dust-free holes (residual dust reduces capacity by 30%+).
Engineering Value Proposition
Ideal Applications:
Heavy vibration-resistant anchoring (Generator/compressor bases)
Life-safety systems (Seismic bracing for fire pipes)
High-preload scenarios (Curtain wall brackets/steel column bases)
Absolute Prohibitions:
High-impact loads (>10g acceleration, e.g., stamping presses)
High-temperature environments (>300°C causing preload failure)
Summary: With vibration resistance, high preload, and bidirectional load capacity as core strengths, hex drive sleeve anchors are irreplaceable in heavy-load industrial, energy, and infrastructure applications—strictly contingent on substrate strength and installation precision!
Application
1. Heavy Industry & Energy Facilities
Vibration-Resistant Anchoring for Heavy Equipment: Specifically designed for compressor, generator, and hydraulic unit bases subject to strong vibrations, offering significantly superior anti-loosening performance compared to hammer drive anchors. Typical case: Reactor vessel support frame anchoring in chemical plants (using M20 A4 stainless steel for corrosion and fatigue resistance).
Energy Infrastructure: Suitable for wind turbine tower base bolt retrofitting and transformer base anchoring, requiring seismic load verification. Example: Remediation of misaligned embeds in substation GIS equipment installations, with ≥50kN pullout force per anchor.
2. Building Structures & Public Safety Engineering
Critical Structural Connections: Serves as a permanent anchoring solution for steel column base plates to concrete foundations (replacing cast-in bolts or for reinforcement). Example: Mega steel column base plates in commercial complexes (M24 anchor groups with ≥120kN shear resistance).
Life Safety Systems: Heavy-duty fire pipe supports and seismic bracing systems compliant with GB 50981 seismic code. Representative case: Fire pipeline brackets in metro tunnels (bidirectional seismic verification + A4 stainless steel for moisture/corrosion resistance).
Public Protection Facilities: Applications requiring impact load resistance and anti-loosening design, such as bridge anti-collision barrier bases and airport runway light fixtures.
3. Special Construction & High-End Curtain Walls
Long-Span Curtain Wall Anchorage: Post-installed brackets for unitized curtain walls, relying on high preload control to ensure wind load resistance. Case study: 200m skyscraper glass curtain wall using M16 anchors (≥25kN pullout force per anchor).
Heavy Decorative Elements: Subframe bases for large stone cladding and sculpture foundations, featuring exposed hex heads for concealed installation.
4. Transportation & Municipal Infrastructure
Rail Transit: Platform canopy column anchoring for high-speed rail, requiring fatigue vibration and cyclic load validation.
Tunnel Engineering: Sealing of shield tunnel segment lifting holes, with sealing washers ensuring watertightness under high hydrostatic pressure.
Port Machinery: Rail clamp fixing for container cranes, mandating A4 stainless steel in salt-spray corrosive environments.
5. Innovative Special Applications
Existing Structure Reinforcement: Anchor connections for steel-jacketed concrete beam/column retrofits, featuring removable designs for maintenance access.
Vibration Isolation for Precision Instruments: Optical table isolation base anchoring in labs, utilizing precise preload control to prevent stress deformation.
Nuclear Power Facilities: Non-safety-class equipment bracket fixing (special models certified via nuclear plant LOCA testing).
Prohibited Applications:
Dynamic Impact Loads: Extreme impact equipment (e.g., forging hammers, stamping presses) requiring dedicated shock-absorbing anchors.
High-Temperature Environments: Locations exceeding 300°C (thermal expansion mismatch causes preload failure).
Chemical Corrosion Zones: Strong acid/alkali immersion environments (stainless steel still requires additional anti-corrosion coatings).
Key Selection Criteria:
Load Matching: For pullout demands >30kN, undercut anchors are preferred (hex sleeve anchors max. ~50kN).
Substrate Verification: Aged concrete requires strength testing (rebound hammer); embedment depth must exceed crack depth by +20mm.
Corrosion Protection: Coastal projects demand 316L stainless steel + nylon caps (prevents thread galling).
Industry Trend: Next-generation products integrate torque-indicating washers (color-changing rings) for visual preload monitoring.
Summary: Hex drive sleeve anchors are irreplaceable for heavy-load, vibration-resistant, high-preload scenarios (e.g., energy equipment, life-safety systems), provided strict adherence to load type, substrate integrity, and corrosion environment boundaries.
